<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>布局框架</title>
<style type="text/css">
*{
margin:0px;
padding:0px;
}
div{
border:10px solid #ccc;
height:250px;
text-align:center;
font-size:50px;
}
div div{
width:32%;
float:left;
}
</style>
</head>
<body>
<div>
<div>11</div>
<div>12</div>
<div>13</div>
</div>
<div>
<div>21</div>
<div>22</div>
<div>23</div>
</div>
<div>
<div>31</div>
<div>32</div>
<div>33</div>
</div>
</body>
</html>